Brake shoe



May 10 1927. J. R. CAUTLEY BRAKE SHOE Filed Oct. 12,1925

INVENTOR Jaws R. CAuTLEY ATTORNEY Patented May 10, 1927.

UNITED STATES PATENT OFFICE.

JOHN CAUTLEY, OF SOUTH BEND, INDIANA, ASSIGNOR TO IBENDIX BRAKE COM- PANY, OF CHICAGO, ILLINOIS, CORPORATION OF ILLINOIS.

BRAKE SHOE.

Application filed October 12, 1925. Se'i'lal N0. 62,078.

This invention relates to brake shoes, and is illustrated as embodied in novel shoes for a three-shoebrake of a well-known type. An object of the invention is to provide an inexpensive but strong and rigid shoe, by building it up of parts capable of being stamped and cut from sheet metal. Inone desirable arrangement, a cylindrical lining-carrying part, preferably pressed to the form of a shallow channel in cross section to provide low edge-stiffening flanges, has secured centrally of its back a separate. part forming a central stifi'ening web. In the illustrated embodiments, oppositely-extending flanges secured to the lining-carrying part are formed on the central stiffening web, as for example by turning in opposite directions tongues cut in its edge, thus forming staggered series of attaching flanges.

According to another feature of the invention, the linmg-ca'rrying part is bent radially at one end, toform a cam-engaging portion centrally reinforced by the separate web.

These and other objects and features of the invention, including various desirable novel details of construction, will be apparent from the following description of two illustrative embodiments shown in the accompanying drawing, in which:

Fig. 1 is aside elevation. of the three shoes of the brake, in their assembled relation;

Fig. 2 is a section on the line 2-2 of Fig. 1, showing the construction of one of the end shoes;

Fig. 3, is aninside elevation, in the direction of the arrows 3-3 in Fig.1, of part of one of the end shoes;

Fig. 4 is a section corresponding to Fig.

'40 2, but showing a modified construction of shoe; and

Fig. 5 is a section through the central shoe, on the line 5-5 of Fig. 1. The brake shown in 'Fig. 1 includes a-cen- 4 tral shoe 10 anchored at 12, a servo end shoe 14 pivoted tothe central shoe at 16, and a reverse end shoe 18 anchored at 20. Shoes 14 and 18 are T-shaped in cross-section, while shoe 10 is channel-shaped, the ends of shoes 14 and 18 extending into the ends of the channel to overlap or crossanchor the shoes. Anchor 12 through a relatively large opening in shoe stiffening flanges if desired.

extends one of which is connected between the free 85 ends of shoes 14 and 18 and the other of which is connected at one end to the endof shoe 10 and at its other end to the backing plate of the brake; This arrangement is more fully described in French Patent Except as further described below, the above-listed parts or their equivalents may be of any desired construction. The present invention relates to the manner of constructing the brake shoes, some features being more especially applicable to shoes 14 and 18;. which are preferably'identical and intercha'ngeable. In the form shown in Figs. 2 and 3, each.80 of these shoes includes a cylindrical liningcarrying part 22, the lining appearing at- 24 in Fig. 1 but being omitted in the other figures. I prefer to press part 22 from sheet metal as a shallow channel in cross- 35 section to provide low edge-stiffening flanges 26, and to bend it radially at its end to provide a cam-engaging portion 28, Fig. 1, which may also have the low edge- 9 he stifi'ening of the shoe is provided by a centrally-arranged part 30 (Figs. 2 and 3) or 130 (Fig. 4)- secured to part22 and serving to reinforce portion 28 along its center line. Part 30 has tongues 32 cut along its edge andalternately .bent in opposite directions to form two series of flanges secured to part 22 by spot-welding or riveting and. extending away from eachother toward the side edges of part 22'. As we appears in Fig. 1, these two series of flanges also extend along portion28, rein forcing it.

.Part 130 (Fig. 4) is channel-shaped inw cross-section, and has edge flanges 132 extending awayfrom each other toward the to art 22.

side edges of part 22, and welded or riveted s shown in Fig. 5, I prefer to make the central shoe 10 generally channel-shaped, with two stifienin webs 230, corresponding to the central we 30, but arranged'near the" opposite edges of the shoe and secured by the alternately-bent tongues 32.

Part of shoe 18 extends far enough beyond the end of part 22 to extend into the channel of shoe 10, to provide for crossanchoring the shoes if desired.

,, While two illustrative embodimeiiits have been described in detail, it is not my intention to limit the scope of the invention to those particular embodiments, or otherwise than by the terms of the appended claims.

I claim:

1. A brake shoe having, in combination, a cylindrical part having approximately parallel side edges, and a separate stiffening part secured to the cylindrical part between said side ed sto form a single-thickness stifienin we and projecting beyond and within t e curve of the cylindrical part to form an integral pivot arm.

2. A brake shoe having, in combination, a c lindrical part having approximately para el side edges, and a separate single-thickness stifiening part arranged between said side edges of the cylindrical part to form it stifl'ening web, and having flanges extending in opposite directions toward the edges of the cylindrical part and secured thereto.

3. A brake shoe having, in combination, a.

cfilindrical part having approximately par- :1 el side edges, and a separate stiffening part arranged between said side edges of the cylindrical partto form a stiffening web, and having a series of tongues secured to the cylindrical part.

4. A brake shoe having, in combination, a cylindrical part, and a one-piece part forming a stifi'enin web and having integral op positel -bent anges at its edge secured to said cylindrical part.

. 5. Abrake shoe having, in combination, a cylindrical part, and a. oneiece separate part forming a stiffening we and having integral oppositely-bent flanges at its edge secured to said ciylindrical part, the flanges extending away side e es of, the cylindrical part.

6. A rake shoe aving, in combination, a

cylindrical part, and a separate part forming a stiffening web and aving tongues at its edge bent alternately in opposite directions to form oppositely-extending series of flanges staggered with respect to each other and secured to the cylindrical part.

7. A brake shoe having, in combination, a cylindrical part, and a separate part forming a stiffening web and having tongues at its edge bent alternately in opposite directions to form oppositely-extending series ofrom each other toward the cylindrical part, and a separate part forming a stiffening web and having tongues at its edge bent alternately in opposite directions to form oppositely-extending series of flanges staggered with respect to each other and secured to the cylindrical part, said part extending beyond the cylindrical art at one end and formed at that end to e mounted on a pivot, and having an opening at an intermediate point for the pivot of a crossanchored shoe. 1

9. A brake shoe having, in combination, a cylindrical part bent radially at one end to form a cam-engaging surface, and a separate part secured to the cylindrical part to form a stiffening web and reinforcing the radiallybent portion between its edges.

10. A brake shoe having, in combination, a cylindrical part in the orm of a shallow c annel in cross section to provide low stiffening flangesalong its edges and bent radially at one end to form a camengag ingsurface having similar edge-stifl'ening flanges, and a separate part secured to the cylindrical part to form a stiffening web and reinforcing the i radially-bent portion between its ed s.

11. A bra e shoe having a part bent radially at one end to provide a cam engaging surface, and a stiffening web having 0 poradiall from its outer edge forming tongues secure to the outer part, and having an unslotted portion projecting as a pivot arm beyond the end of theouter part.

14. A brake shoe comprising a cylindrical outer art, and a stiffening member slotted radial y from its outer edge forming tongues bent a ternately in opposite directions and secured to the outer part, and having an unslotted portion pro3ectihg as a pivot arm beyond the end of the outer part. K

15. A brake comprising, in combination, a pair of shoes, each having a cylindrical outer part, one -havin an arcuate separate single stiffening mem er secured along its outer edge to its inner face, and the other having two parallel spaced stiffening members secured along their outer edges to its facean inner d projecting on opposite sides I v of one end of said single stlfiening member to straddle said end, 7 16. A brake comprising, in combination, a

I pair of shoes, each having a cylindrical outer part, one having an arcuate stifiening web on its inner face, and the other having two "of said stiifening web" to straddle said end..

parallel spaced stifiening members secured along their outer edges toits inner ,face and projecting on opposite sides of one end outer edge to its inner face, and the other having two parallel spaced members secured alongotheir outer edges to its inner. face and projecting on opposite sides of one end of said single stifiening member to straddle said end, at least one of said? a cylindrically-eurved outer stiffening members having oppositely-bent tongues to the inner face of its outer 18. A brake comprising, in combination, a shoe having a cylindrical outer part and a separate stiffening member secured along its outer edge to the inner face of. said outer part and. projecting beyond the end of the outer part, and another shoe having stifiening means including spaced projecting arms strad the end of the projecting portion of the member.

members at opposite en 19. A comprising, in combination, a 1 shoe having a cylindrica outer part and a separate stifienin member-havin staggered sets of tongues ong its outer secured to oppodte sides of the inner face of said vouter part and which member has a portion projecting beyond'the end of the outer part, and anot ineludingozpaced projecting arms straddling the end member. 20. A rake com rising, in combination, a central shoe inclu an outer cylindrical part and two parallel separate members secured along their outer edges to the inner faceof said part, and a pair of and shoes having at their ends-pivot armsprojecting between the ggrallel stifi' shoe.

21. A brake. shoe of pressed metal havin part (22) wi its opposite sides stiffened y parallel integral flanges (26) projecting inwardly, and

having a separate.

stiffening member (30) rmanently o the inner face of the ,outer part (22) andjextending substantially parallel to the integral flanges (26), the separate member; (30) being substantially deeper than the integral flanges I (26).

y In testimony whereof, I have hereunto signed my name. r

' JOHN CAUTLEY.-

the projecting portion 'of the.

er shoe having stifiening means of the centre 

